<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <form action="/login" method="post">
        <!-- 表单不同内容的收集 对表单进行分组，一个表单可以有多个fieldset-->
        <fieldset>
            <!-- 说明每组内容描述 -->
            <legend>基本信息</legend>
            <div>
                <label for="username">用户名</label>
                <input type="text" placeholder="请输入用户名" id="username" name="username" required>
                <!-- required 必填 -->
                <input type="submit" value="提交">
            </div>

        </fieldset>
        <fieldset>
            <legend>银行卡信息</legend>
            <div>

            </div>
        </fieldset>
    </form>
</body>

</html>